Warp stop motion



July 24, 1928.

H. E. KHOURY WARP STOP MOTION Filed July 1926 2 Sheets-Sheet 5] m )[any.EZKhou/y.

4 7 arm July 24, 1928.

H. E. KHOURY yum? STOP morxou 2 Sheets -Sheet v Filed July e, 1926knock-off mechanism inoperative.

Patented July 24, 1.928.

UNITE. am ss PATENT O CE- HARRY R 3 3 501? NEW BEDJFQRD, MAssAonnsErrs-WARP STOP MOTION.

Application filed July 6,

the frames are raised and lowered. The mechanism also embodies meansupon the loom,- which effects rocking of the bar and also serves tomaintain a power operated The detector bar rocking means is connectedwith the knock-offmechanism, so that upon look ing of the bar againstrocking movement, the knock-off mechanism is rendered operai tive andthe loom stopped.

The presentflinvention is an improvement upon the structure disclosed inthe patents referred to, and has as an object, the provision of amechanism which is of simplified construction, and may be readilyassociated with a loom having any number of harnesses.

These and other objects of the invention, which will become clear as thedescription proceeds, are accomplished. by'a. mechanism,

a preferred embodiment of which is illus.-'

trated in the in Figure 1 is a side elevational view showing themechanism removed from the loom, and associated with only such loomparts as are neeessaryto illustrate the operation.

FigureQ is a View taken at right angles to Figure 1 and showing aportion of the mechanism in section.

Figure 8 is a fragmentary view, showing the means for imparting arockingmovement to the detector baras it is moved longitudinally, and j Figuresl and 5 are fragmentary detail views, showing the construction of theheddles and detector bar, with the heddle illusaccompanying drawings,wheretrated asdropped in Figure 5 and locking the detector bar againstmovement.

, Referring to the drawings, wherein like numerals represent correspondng parts heddle frame, and adapted to be rocked asv 1928. Serial No.120,739,.

throughout, 10 indicates the harness or heddle. frames, having. thereinthe h'eddles' 11, maintained in position at their upper and lower endsby guide or cross bars 12 extending therethrough, A detector bar 13 ofangularcross section, which isiformed by an upstanding rib 14, extendsthrough the heddles and is movably mounted in the framelO, it beingunderstood that there is one detector bar in each frame, The detectorbarisnormally arranged in each heddle, asillustrated in Figure 3, and isfree to move. A feature of the present invention, which distinguishes itfrom those of the patents referred to, is that the detector bar 18movable longitudinally by mechanism which will be later "described, andis also 'rotatedor rocked. As will be understood,

wheneverone of the 'warp threads breaks, its .heddle will drop to theposition illustrated in Figure 5, wherein the rib 14 will enter thenarrowed portion 11', thus locking the bar against rocking movement. T

The bar has mounted thereon a collar 16, fixedly held by means of a setscrew 17, and

this collar receives the end of a spring. 18,

having its other end 19 anchored in the heddle frame. The. spring servesto maintain the detector bar in the position illustrated in Figure 3with the rib 14, or, if the bar is of any other formation, with theentire bar arranged to enter the narrowed slot 11. The position of thebar maybe varied by tensioning the spring 18 for adjustment of thecollar 16, Themeans for rocking or rotating the bar as, it is movedlongitudi nally, may take any suitable form; in the present instance,the detector bar is formed with a spiral groove 20, which receivesinwardly projecting fingers 21 on the plate 21, which is secured to theframe, As the bar is pressed inwardly and longitudinally moved by themechanism which will be described, these fingers co-operate with thegroove QOQand rotate the bar. Due to the fact that the plate 21 isfixed, it will be'understood that should one of the heddles drop to theposition illustrated in Figure 5, the bar will thereby be lockedagainstlongitudr nal movement. and in such instance, the stop cured tothelooln frame or other fixed ole ment, as by means of outstanding ears23 (Figure 1). The bracket has mountedtherein a series of verticallyextending levers 24E fulerumed about a horizontal shaft 25 and normallymaintained in the position illustrated by full lines in Figure 2, bymeans of a series of springs 26. It will be understood that there is alever for each detector bar, and any number of levers may be positratedin Figure 2, and as the heddle frames descend, the detector bar will bemoved longitudinally, through its engagementavith' the lever, and as itmoves longitudinally will be rocked or rotated, due to the provision ofthe spiral groove 20 and co-operating lingers 21.. However, should oneof the bars be locked, the corresponding lever will be pressed inwardlyas the roller 29 passes the horizontal plane of the fulcrum shaft 25,and render operative mechanism effective to stop the loom. The positionsto which the lever 24 is moved by a locked detector bar is illustratedin dotted lines in Figure 2. To maintain the lever in this position,detent or stop means is provided in theform of a series independentdetents 30, pivotally mounted above each lever upon a shaftfll andhavingshoulders 32, which drop behind any lever, the upper end of which ismoved outwardly, due to inward pressure by a locked detector bar upontheportion ofthe lever [below the fulcrum shaft 25, by a locked detectorbar. lhus any'lever which is actuated by a. locked bar is retained inthe position to which it is moved thereby until the loom is stopped. p

The mechanism rendered operative to stop the loom, through operation ofone of the levers 24;, may take any suitable form, but in the presentinstance, it. preferably com; prises a rod pivotally supportedat itsends for bodily swinging movement. by means of upwardly extending links34-, these being fixedly secured to a rotatable shaft 35. As will beunderstood, when the lower end of any one of the levers 524 is pressedinwardly, it engages the bar-x34, and through the rod rotates the shaftThis shaft "carries arm 36, which'is connected by means of a pitman orlink 37 with a" forked lever 38. The lever 38 is pivotally mounted upona pin 39 in a bracket 40, the bracket 40 being fixedly secured to alongitudinally movable bar ilgmounted in the loom frame (not shown), andhaving a hooked. end 42 engaging the shipperlever S. The forked lever 38is normallylowered. (Figure 1), and in this position, it is out of thepath of a dag ger or pin. 43 upon the loom lay L. As will be understood,the position of the lever 38, illustrated in Figure 1, is that in whichit is normally maintained when the levers 8 L, engageable by the endsof'the detector bars, are intheir normal positions and the bars are freeto be rocked thereby. Should one of the levers 24 be actuated by a.locked detector bar, it willserve, through the mechanism described, toraise thelever 38 into the path of the dagger 43, andit will be maintained in this position by one ofthe detents 3O engaging the lever '24:,which has been moved by the detectorba'r. As soon as the dagger engagesthe lever 48, the shipper lever will be actuated to stop the loom.

It is thought that the operation of this mechanism,will. beentirelyclear from the be made in the structure illustrated. and de}scribed without departing from the invention which is defined in thefollowing claims; 1

,I"clai1n:

1. In a warp stop motionfor looms, the

combination with a heddle frame and a series of heddles adapted to besupported therein by the warp threads, of a rockable longitudinallymovable bar mounted in the heddle frame, the 'heddles having the barassociated therewith and being adapted to engageand lock the baragainstmovoment when one of the warp threads breaks, means on the loomseparate from the bar adapted to, rock and longitudinally move thehar asthe heddle frame moves, and power actuated means to stop the loom, saidstop means being maintained inoperative as long as the bar is free tomove under theinfluencc of said actuating means.

2. In a warp stop motionfor looms, the combination with a heddleframeand a series of heddles adapted to be supported therein by the warpthreads, of a rockable longitudinallyinovable bar mounted in the heddleframe. the heddleshaving the bar associated therewith. and being adaptedto engage and lock the bar against movement when one of the warp threadsbreaks, means on the loom separate from the bar adapted to rock andlongitudinally move the bar as the heddle frame moves, and poweractuated means separate from the heddle frame to stop the loom, saidst'op means being maintained in operative as long as the. haris free tomove under the influence ofsaid actuating means.

3. In a warp stop motion for looms, the combination with a heddle frameand heddles supported therein by the warp threads,

the bar against rocking movement when one of the Warp threads breaks,means" on the loom separate fromfthe bar adapted to move of a barmounted in the heddle frame and free for rocking and longitudinalmovement,

' to move.

ii In a'ivarp stop motion for looms, the comblnationwith a heddle frameand heddles supported therein by the Warp threads,

of abar mounted in the heddle frame and free for rockingandilongitudinal movement,

the heddles havingthe bar associated therewith and being adapted toengage and lock the bar longitudinally as theheddle frame moves, meanson the heddle fi'ameto' rock said bar as it is moved longitudinally, andpower actuated means to stop the loom, said step meansbeing maintainedinoperative as 'longasfthe bar is free to move." 3o

Combination With a heddle frameland hed- 5. In a Warp stop motion'forlooms, the

dies supportedtherein by the arp threads, of a bar mounted in the heddleframe and 1 free for rocking'andlongitudinal movement,

' the heddles having the bar associated there- 'With and being adaptedto engage and lock the bar against rocking movement-When one ofthe warpthreadsbreaks, means on the looniseparate from the bar adapted to movethe bar longitudinally as the heddle frame imo'vel's, cooperating meanson tl e heddle frame and bar to rock said bar as it is'mov'edlongitudinally, and power actuated means to stop the loom, said stopmeans being maintained inoperative as longas the bar is free to move;

6. In a Warp stop motion for looms, the combination With a heddle frameand bed dies supported therein by the Warp threads, of a bar mounted inthe heddle frame and free for rocking and longitudinal movement,

' the heddles having the bar associated therewith and being adapted toengage and lock the bar againstrocking movement when one of the Warpthreads breaks, means on the loom separate from the bar adapted to movehe bar longitudinally as the heddle frame moves, means on the heddleframe to rock said bar as it is moved longitudinally, and power actuatedmeans actuable independently of the movement of the heddle frame to stopthe loom, said stop means being maintained inoperative as long as thebar is free to move.

7.111 a Warp stop motion forlooms, the

combination wth a heddle frame having a seriesofheddles supported byWarp threads and a rockable bar mounted in the heddle frame "andassociated-' With the heddles, the

heddles being formedto engage andlock the bar against movement ivhen'oneof the Warp threads breaks, of means onthe loom adapt;- ed to rock thebar as the heddle frame moves, said means-comprising a bracket, asubstantially vertically extending lever mounted in said bracket about ahorizontal axis at a right angle to the axis ofsaid bar and yieldinglyheld against movement, said lever being pivoted at-an intermediate pointalong the same and movable by thebar when the latter is looked as theheddle frame moves,

but serving to move said bar when the latt'eris unlocked," and amemberon the end of aid baradapted to be carriedback and forth acrosstheaxls of sald lever and along its "two arms as the heddleframemoves.

8. Ina arp stop mot-ion forfllooin's, the ombination" With a heddleframe having a series of heddles supported'by warpthread's, of arockable and longitudinallymovable bar mounted in the heddle frameandassoci- V ated with the heddle, the heddles being formed to engageandlock the bari against jmovement when one of the Warpthreads breaks,means on the loom separate from the bar adapted to rock the same as theheddle rrame moves, said means comprising abracket, amember pivotallymounted about a horizontal axis on said bracket but yieldingly heldagainst movement, said member serving normally to move the barlongitudinally as the heddleframe moves but being actuatablebythebarwvhenlocked to stop the loom, and means for rocking said bar'asit is moved longitudinally by said member;

9. In a Warp stop motion for looms, the

combination with heddle frame and a series ofheddles adapted to besupported therein by Warp threads, of a detector bar mounted in theheddle frame and being free for longitudinal movement, and means forrocking said bar as it is moved longitudinally, said heddles beingformed to lock the bar against movement when one ofthe Warp threadsbreaks.

10. 111 a Warp stop motion for looms, a heddle frame having a series ofheddles adapted to be supported therein by Warp threads, a detector barassociated with the he'ddles, means for moving said bar longitudinallyand simultaneously rotating the same, the heddles being adapted to lockthe bar against movement- When one of the Warp threads breaks, and poweractuated means to stop the loom operative only When said bar is lockedagainst movement by a fallen heddle.

11. In a Warp stop motion forlooms, the combination With a plurality ofheddle frames, each having a series of heddles sup-t ice gaged by alocked bar as the heddle frames move to stop the loom, said meanscomprising a bracket, a plurality of substantially vertically disposedlevers independently mounted side by side in said bracket and each beingmovable about a substantially horizontal axis, said'levers being pivotedat an intermediate point along the same and each being engageable toactuate the bar when the bar is free for movement, a member operable byanyone of said levers, when actuated a locked detector bar, meansassociatedwith said member adapted to stop the loom only when saidmember is actuated by one of said levers, and an element at the end ofeach of said detector bars adapted to engage one of said levers, and tobe carried along the two arms thereof as the heddle frame moves.

12. In a warp stop motion for looms, the combination with a plurality ofheddle frames each having a series of heddles supported by warp threadsand a rockable bar yieldingly restrained against longitudinal movementmounted in said frame, and associated with said heddles, the heddlesbeing formed to lock the bar against movement when onelof the warpthreads breaks, of means on the loom separate from the bars adapted torock the bars as the heddle frames move and to be actuated by a lockedbar to stop the loom, said means comprising a bracket mounted on theloom frame, a plurality of levers pivotally and independently mountedabout a horizontal aXis in said bracket and arrangedside by side, saidlevers having a normal position in a common vertical plane, spring meansfor yieldingly retaining the leavers in said position, detent means forlimiting the movement of said levers under the influence of said springmeans, a rod engageable by any one of said levers, a continuously movingelement on the loom, and means connected wit-h said rod adapted to bemoved thereby into the path of said continuously ,moving'element onlywhenthe rod is actuated by one ofsaid levers.

13. In a warp stop motionfor looms, the

ciated with said heddles, the heddles being formed to lock the baragainst movement 'when one of the Warp threads breaks, of

means on the loom separate from the bars adapted to rock the bars as theheddle frames move, and to be actuated by a locked bar to stop the loom,said means comprising a bracket mounted on the loom frame, aplurality oflevers 'pivotally mounted about a horizontal axis in said bracket andarranged side b'y side, said levers having a normal position in commonplane, spring'means for y1eld1ngly retaining the levers in saidposition, detent means for limiting the movement'of said levers underthe influence of sa d sprlng means, a rod engageable by any one of saidlevers, a continuously moving element on the loom, andmeansconnectedwitlrsaid rod adapted to-be moved thereby into the path ofsaid continuously moving element only when the rod is actuatedby one ofsaid levers, said detent means serving also to retain said levers in theposition to which they are moved by a locked bar.' In testimony whereofI have hereunto set my hand. 1 I e HARRY E. KHOURY.

